PHP - 將數組返回給另一個數組的組合函數

Question

我正在使用基於mcv設計模式的OpenCart商店。我需要一個模型函數返回一個數組，但我需要在該數組內調用另一個返回數組的函數。下面這個函數打破了這裏：

'gallery_images' => $this->getGalleryImages($data['product_id'])

public function getImportProductInfo() { 
    $query = $this->db->query("SELECT `product_id` FROM " . DB_PREFIX . "product WHERE `status` = '0' AND `affiliate_id` = '" . $this->affiliate->getID() . "'"); 

    $pids = array(); 
    foreach($query->rows as $result) { 
     $pids[] = $result['product_id']; 
    } 

    // product & product description 
    $query_product = $this->db->query("SELECT p.model, 
               p.product_id, 
               p.quantity, 
               p.image, 
               p.price, 
               p.weight, 
               p.length, 
               p.width, 
               p.height, 
               pd.name AS 'product_name', 
               pd.description AS 'product_description', 
               cd.name AS `category_name`, 
               m.name AS 'manufacturer_name' 
             FROM  " . DB_PREFIX . "product p 
             LEFT JOIN " . DB_PREFIX . "product_description pd ON p.product_id = pd.product_id 
             LEFT JOIN " . DB_PREFIX . "product_to_category ptc ON p.product_id = ptc.product_id 
             LEFT JOIN " . DB_PREFIX . "category_description cd ON ptc.category_id = cd.category_id 
             LEFT JOIN " . DB_PREFIX . "manufacturer m ON p.manufacturer_id = m.manufacturer_id 
             WHERE  p.product_id IN (" . $this->db->escape(implode(',',$pids)) . ")"); 


    foreach($query_product->rows as $data) { 
      $product_data[] = array(
       'product_id'   => $data['product_id'], 
       'model'    => $data['model'], 
       'quantity'    => $data['quantity'], 
       'featured_image'  => $data['image'], 
       'price'    => $data['price'], 
       'weight'    => $data['weight'], 
       'length'    => $data['length'], 
       'width'    => $data['width'], 
       'height'    => $data['height'], 
       'product_name'   => $data['product_name'], 
       'description'   => $data['product_description'], 
       'category_name'  => $data['category_name'], 
       'manufacturer_name' => $data['manufacturer_name'], 
       'gallery_images'  => array($this->getGalleryImages($data['product_id'])) 

      );  
    } 

    return $product_data; 
} 

這裏是getGalleryImages（）函數。注意這裏我也試過return implode(', ',$images);，所以我沒有建立數組，但它仍然打破。

public function getProductGalleryImages($product_id) { 
    $query = $this->db->query("SELECT `image` FROM " . DB_PREFIX . "product_image WHERE `product_id` = '" . (int)$product_id . "'"); 

    $images = array(); 
    foreach($query->rows as $result) { 
     $images[] = $result['image']; 
    } 

    //return implode(', ',$images); 
     return $images; 
} 

每個產品都有存儲在交叉表中的多個圖像的URL，我需要添加到陣列，它一個上午都在戰鬥我...任何想法將不勝感激。在此先感謝:)這裏

OK是嵌入在陣列中的SQL工作

'gallery_images' => $this->db->query("SELECT `image` FROM " . DB_PREFIX . "product_image WHERE `product_id` = '" . (int)$data['product_id'] . "'") 

但它返回這樣的：

[gallery_images] => stdClass Object ( 
[row] => Array ([image] => motorcycle/12_06_27/031.JPG) 
    [rows] => Array ([0] => Array ([image] => motorcycle/12_06_27/031.JPG))[num_rows] => 1))) 

所有我想要的是['image']一部分。

Answer 1

只需省略「數組」部分即可。取而代之的

array($this->getGalleryImages($data['product_id'])) 

使用

$this->getGalleryImages($data['product_id']) 

因爲（如果）這個函數會返回一個數組，這是正確的語法。 如果你想成爲安全有關的返回值是一個數組（即，強制它是），你可以這樣做：

array() $this->getGalleryImages($data['product_id']) 

......這幾乎是同樣的事情，但是請注意，數組（）括號立即關閉。這意味着你「結果」到數組中。 （我不知道這是你的初衷btw ...嗎？）

你可以在數組中使用數組，這是沒有問題的。現在，如果這不是正確的答案，讓我們澄清這個問題本身:)